I think that any answer you receive to such a question is going to be incredibly speculative... but I ask you this in return - why did you restrict your population count to just the human population of just one planet in the entire universe?
"Do not force others, including children, by any means whatsoever, to adopt your views, whether by authority, threat, money, propaganda, or even education." - Ven. Thich Nhat Hanh
"The uprooting of identity is seen by the noble ones as pleasurable; but this contradicts what the whole world sees." (Snp 3.12)
"You've got to focus on what's really worthwhile in life, which means resisting a lot of the currents in our culture" (Thanissaro)